/*
 * Copyright (c) 2012, the Last.fm Java Project and Committers
 * All rights reserved.
 *
 * Redistribution and use of this software in source and binary forms, with or without modification, are
 * permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above
 *   copyright notice, this list of conditions and the
 *   following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above
 *   copyright notice, this list of conditions and the
 *   following disclaimer in the documentation and/or other
 *   materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package com.andrew.apolloMod.helpers.lastfm;

import java.util.HashMap;
import java.util.Map;

/**
 * The <code>ItemFactoryBuilder</code> can be used to obtain {@link ItemFactory
 * ItemFactories} for a specific type.
 * 
 * @author Janni Kovacs
 * @see ItemFactory
 */
final class ItemFactoryBuilder {

    private static final ItemFactoryBuilder INSTANCE = new ItemFactoryBuilder();

    @SuppressWarnings("rawtypes")
    private final Map<Class, ItemFactory> factories = new HashMap<Class, ItemFactory>();

    private ItemFactoryBuilder() {
        // register default factories
        addItemFactory(Album.class, Album.FACTORY);
        addItemFactory(Artist.class, Artist.FACTORY);
        addItemFactory(Image.class, Image.FACTORY);
    }

    /**
     * Retrieve the instance of the <code>ItemFactoryBuilder</code>.
     * 
     * @return the instance
     */
    public static ItemFactoryBuilder getFactoryBuilder() {
        return INSTANCE;
    }

    public <T> void addItemFactory(Class<T> itemClass, ItemFactory<T> factory) {
        factories.put(itemClass, factory);
    }

    /**
     * Retrieves an {@link ItemFactory} for the given type, or <code>null</code>
     * if no such factory was registered.
     * 
     * @param itemClass the type's Class object
     * @return the <code>ItemFactory</code> or <code>null</code>
     */
    @SuppressWarnings("unchecked")
    public <T> ItemFactory<T> getItemFactory(Class<T> itemClass) {
        return factories.get(itemClass);
    }
}
